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- Haynes 556 (UNS R30556)
Haynes 556 (UNS R30556)
High-temperature alloy

Features
Haynes 556 has the best combination of strength, resistance to high-temperature corrosion, and also has outstanding fabrication capabilities. It is an excellent welding material for nickel-chromium alloys and iron-nickel-chromium materials
Product Form
| Products | ASTM Standard | AMS Standard | AWS Standard |
| Plate, Sheet, Strip | B435 | 5874 | - |
| Bar | B572 | 5877 | - |
| Forging Part | - | 5877 | - |
| Wire | - | 5831 | - |
| Welded Pipe DN | B619 | - | |
| Seamless Pipe | B622 | - | |
| Welded Pipe | B626 | - | |
| Forging Part | - | A5.9(ER3556) |
Chemical Analysis
| % | Fe | Cr | Ni | Co | Mo | W | Mn | Si | C | P | S | Al | Zr | La | B | Nb | |
| UNS R30556 | Min. | Balance | 21 | 19 | 16 | 2.5 | 2 | 0.5 | 0.2 | 0.05 | - | - | 0.1 | 0.001 | 0.005 | - | - |
| Max. | Balance | 23 | 22.5 | 21 | 4 | 3.5 | 2 | 0.8 | 0.15 | 0.04 | 0.015 | 0.50 | 0.10 | 0.015 | 0.02 | 0.30 |
Physical Properties
| Density | 8.23G/CM3 |
| Melting Range | 1330-1415℃ |
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